A larger population is essentially a healthier one. The more organisms there are present, the less successful a detrimental characteristic is. This information is especially pertinent to endangered species that are only present in small numbers in the wild. These organisms are at the greatest risk for inbreeding, or the success of a detrimental characteristic, as opposed to their fellow animals which are present in larger amounts.
Any small populations of animals who are isolated are in danger of serious inbreeding and thus extinction. Detrimental characteristics are more likely to become pronounced in these small groups and these characteristics are termed detrimental because they decrease the fitness of the animal and are thus a danger to their livelihood. We need to be aware of the risks that endangered animals in the wild are facing and strengthen captive breeding programs and ensure that animals in the wild are not isolated from each other and have access to a large gene pool to ensure the success of their species.